Ground substance

Loose/Areolar CT

found everywhere in the body
loosely woven tissue with a fiber arragment that allows for distortion w/out damange
high fluid content easily permits nutrient and waste diffusion
very loose, lots of movement. allows for molecular moventment from high to low concentration

Fluis type CT

Epithelial tissue

composed of one or more layers of closely packed cells
lines every body surface, all body cavities, the external and internal lining of many organs (protection)
constitutes the majority of exocrine and endocrine glands(secretion)
composed of cells that can absorb nutrient molecules(absorption)

mucus glands

mixed glands

exocrine glands

gland is connected to an epithelial surface by a duct
secretory portion made of glandular cells that produce material
Duct portion lined with ductal cells that channel secreted materials
Ductless allowing straight into the blood stream

Excretion methods: Merocrine

packing their secretions in structures called secretory resicles
the gladular cells remain intact and are not damanged in anny way by producing the secretion
secretion becomes released out of the cell membrane

Excretion methods: apocrine

Endocrine Glands

glandular cells in endocrine glands have no connection to an epithelial surface (no ducts)
cellular products are secreted into bloodstream
use hormones as chemical messengers to influence cell activities elsewhere in the body
some organs are both exocrine and endocrine (pancreas, overies, testies)